Sleet

Sleet: Rain and snow being precipitated together.
Sleeve: A drogue or a windsock.
Slipstream: The stream of air behind a propeller which usually has about 20 per cent greater speed than that of the aeroplane, at every speed.

Sleet is transparent ice pellets less than 5 mm diameter that bounce on impact with the ground. Sleet starts as snow, partially melting into rain on descent through a warm layer, then refreezing in a cold near-surface layer.

PRECIPITATION- Any or all forms of water particles (rain, sleet, hail, or snow) that fall from the atmosphere and reach the surface.
PRECISION APPROACH-
(See PRECISION APPROACH PROCEDURE.) ...

Not only are there many different kinds of precipitation that can form but it can also fall to the Earth in different ways. Snow, sleet, hail, ice, rain, mist, fog, freezing rain, and drizzle are all forms of rain.

See also: Course, Climb, Pilot, Cross, Aircraft